Reinforced concrete flooring.



N0. 875,975. PATENTED JAN. 7, 1908.

W. P. ANDERSON & L. H. NOLTE.

REINFORCED CONCRETE FLOORING.

APPLICATION FILED JAN. 2, 1906 ,/,U g. C

% 0 g O //E l g o B 7/ g g a 1 i F 1, F if '7 f 1) I A f X UNITED STATES PATENT OFFICE.

WILLIAM P. ANDERSON AND LOUIS H. NOLTE, OF CINCINNATI, OHIO, ASSIGNORS TO FERRO- CONGRETE OONSTRUOTION COMPANY, OF CINCINNATI, OHIO, A CORPORATION OF OHIO.

REINFORCED CONCRETE FLOORING.

Specification of Letters Patent.

Patented Jan. 7, 1908.

Application filed January 2.1906. Serial No. 294-065.

T all whom it may concern:

Be it known that we, WILLIAM P. ANDER- soN- and LOUIS H. NOLTE, citizens of the United States of America, and residents of Cincinnati, county of Hamilton, State of Ohio, have invented certain new and useful Improvements in Reinforced Concrete Flooring, of which the following is a specification.

The object of our inventionis a concrete flooring, which is reinforced in a uniform degree, above its supportin beams, so as to resist the tensile stresses W 'ch are developed there in the upper strata of the flooring, by loads located slmultaneously upon opposite sides of the beam. J

The invention will. be described first in connection with the accom anying drawings and then will be particular y pointed out in the claims.

In the drawings, Figure 1 is a perspective view of a portion of flooring embodying our' invention, in the process of construction. Fig. 2 is a transverse sectional view of a flooring embodying our invention. Fig. 3 is a diagrammatical view, for illustrating the strains which are developed in the flooring by loads located u on opposite sides of a beam.

Referring to ig. 1: A, indicates the temporary frame-work, for molding the. concrete, the channels, a, indicating the molds for the beams. Upon the frame work straddling the channels, a, a series of metal brackets, B, are placed at regular intervals, to carry a longitudinal supporting rod, C, centrally above each channel. Longitudinal rods, D, are placed upon the frame-work between the channels, in the usual manner. Straight transverse rods, E, are then laid upon the longitudinal rods, Du Alternating with the transverse rods, E, transverse rods, F, are laced 'upon the longitudinal rods, D. Rods, F, have arcs, f, formed in them which pass over and rest upon the supporting'rods, C, which holds the arcs, f, at a uniform dis tance above the frame work, A.

' Referring to Fig. 2: The usual longitudinal rods, G, having been placed in the'chanthe floor will be subjected.

nels, a, concrete, H,.is filled in upon the frame, A, to the desired depth.

Referrin to Fig. 3: When loads are placed upon the flooring at the points,- 2, 2, upon opposite sides of the beam there are tensile stresses developed in the upper strata of the flooring above the beam, 3, as indicated by the separatin arrows and compressive stresses in the%ower strata, as indicated by the approaching arrows. To take 'up the tensile stresses -it is necessary to have a metal member. The compressive stresses in the lower strata are resisted well by the concrete itself. The points at which these tentile stresses will be developed most strongly will vary with the distance apart of the beams, the weight of the loads to which the flooring is sub ected and the depth of the flooring.

I have illustrated as the preferred form of bracket, B, one with divergent legs, I), b, and a horizontal member, 6 since this bracket is one whose height may be readily diminished 70 by a blow. upon the member, 6 thereby giving a greater spread'to the legs, I), b,in order to regulate the hei htat which the sup orting rod, C, is hehT-above the frame, A, to meet the conditions to which it is presumed What we claim is:

ljAconcrete construction consisting of concrete beams reinforced with longitudinal metal rods and a concrete flooring supported by the beams in combination with brackets with'divergent legs straddling the beams, supporting rods located upon the brackets, ro s located transversely to the supporting rods and having upwardly curved arcs forc'lmed therein to rest upon the supporting r0 s.

2. A concrete construction consistin of concrete beams reinforced with longitu inal metal rods and a concrete flooring supported by-the beams in combination with brackets located in the concrete and straddling the beams, sup orting rods located upon the brackets'an rods transverse to the supporting rods, one set of said rods being straightand ing rods carried by the brackets and rods 10 passing beneath the supporting rods and the transverse to the brackets and having upother set alternating with the said set and curved 'arosto-engage the supporting rods;

having ares curved upward and resting upon 7 WILLIAM R ANDERSON the supporting rods.

3. A flooring to be molded in position oon- LOUIS E' sisting of a fiat frame-Work with lon itu dinal Witnesses: channels for moldin the beams, rackets WALTER F. MURRAY, straddling the ohanne s at intervals, support- AGNES MGCORMAOK. 

